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Liferay Portal Systems Development
Liferay Portal Systems Development

Liferay Portal Systems Development: Build dynamic, content-rich, and social systems on top of Liferay with this book and ebook

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Liferay Portal Systems Development

Chapter 2. Service-Builder and Development Environment

Before moving on to develop JSR-286 portlets, we have to set up our development environment properly. Fortunately, Liferay provides a development environment, namely, the Plugins SDK environment (Plugins SDK) for developing Ext plugin, portlets, hooks, themes, layout templates, and webs. Liferay portal also provides Service-Builder as a tool to build Java services that can be accessed in a variety of ways. This chapter will first introduce how to set up Plugins SDK and how to build it. Then, it will address how to use Service-Builder and what happens when the portal starts from scratch.

By the end of this chapter, you will have learned how to:

  • Set up a development environment

  • Navigate through the portal and plugins structure

  • Use Service-Builder

  • Populate database schema and default data

  • Use default project creation and templates

  • Develop portlets within Tomcat in a fast way

Plugins SDK development environment

Plugins SDK is a simple environment...

Plugins SDK development environment


Plugins SDK is a simple environment for plugins development such as Ext (Ext stands for extension) plugins, themes, layout templates, portlets, hooks, and webs (web applications). It is completely different from the Liferay portal core services as it uses external services portal-service only if required.

In order to set up the development environment, Plugins SDK for development, customization, deployment, and debugging, we need to consider the following aspects: required tools, databases, application servers, IDE (Integrated Development Environment), portal runtime bundle, and portal source code. We will have a deeper look at these aspects.

Of course, you can use Liferay Developer Studio, where all aspects are packaged as one simple bundle or Liferay IDE. Liferay IDE is an extension of the Eclipse platform that supports development of plugins projects such as portlets, hooks, layout templates, themes, and Ext plugins—as you can see, webs...

Portal and plugins structure


Before navigating to the portal runtime structure, portal source code structure, plugins runtime structure, and plugins SDK source code structure, let's first build a portal source code Java project named portal-trunk (represented as a variable $PORTAL_SRC_HOME) and a plugins SDK source code Java project named plugins-trunk (represented as a variable $PLUGINS_SDK_HOME).

  • Check out svn://svn.liferay.com/repos/public/portal/trunk as the Java project portal-trunk in Eclipse IDE; of course, you can use any name for this project. We are using this name only for ease-of-reference.

  • Check out svn://svn.liferay.com/repos/public/plugins/trunk as the Java project plugins-trunk in Eclipse IDE; again, you can use any name for this project. This name is used for ease-of-reference.

Using the IDE, you will see the portal source code Java project portal-trunk and the plugins source code Java project plugins-trunk.

In addition, you may be interested in Alloy UI source code. Therefore...

Service-Builder


Liferay portal provides a tool named Service-Builder, which could automate the creation of interfaces and classes for database persistence, local and remote services. In brief, Service-Builder will generate most of the common code needed to implement, find, create, update, and delete operations on the database, allowing developers to focus on the higher-level aspects of the service design directly.

The term service is a class or set of classes designed to handle retrieving and storing data classes. A service could be local or remote. A local service is used in the local Liferay instance, while a remote service is accessible from anywhere. By default, remote services support SOAP, JSON, and Java RMI. This section is going to discuss Service-Builder in the portal core, and the next chapter is going to focus on Service-Builder in plugins.

Ant target build-service

Ant target build-service is specified in $PORTAL_SRC_HOME/portal-impl/build.xml as follows. Liferay eats its own...

Default data population


Now you can start the portal. As you have noticed, the default database, Hypersonic, and the default data are in use. As shown in the following settings, Liferay is configured to use Hypersonic as its database. Do not use Hypersonic in production. Hypersonic is an embedded database useful only for development and demo purposes. The default database settings are defined in portal.properties, which can be overridden by creating portal-ext.properties.

# Hypersonic
jdbc.default.driverClassName=org.hsqldb.jdbcDriver
jdbc.default.url=jdbc:hsqldb:${liferay.home}/data/hsql/lportal
jdbc.default.username=sa
jdbc.default.password=password

As shown in the preceding code, the default data is stored at $LIFERAY_PORTAL/data/hsql/lportal.script. Moreover, the portal provides a dialect detector in com.liferay.portal.spring.hibernate.DialectDetector. This dialect detector will check dialects such as HSQL (Hypersonic), ASE (SybaseASE15Dialect), DB2 (DB2Dialect), Microsoft (SQLServer2008Dialect...

Default project creation and templates


Plugins SDK provides default plugins project creation and templates, which are used in Liferay IDE. This section is going to show you the default creation scripts and default templates.

Plugins default project creation—Ant targets

Plugins SDK provides default plugins project creation Ant targets, where you can build your own plugins simply. For example, Ext plugins could be created with the following Ant command line at $PLUGINS_SDK_HOME/ext/:

create.sh: ant -Dext.name=$1 -Dext.display.name=\"$2\" create
create.bat: call ant -Dext.name=%1 -Dext.display.name=%2 create

The first parameter is your extension plugin name. A new directory will be created based on the extension plugin name. The second parameter is the extension plugin's display name.

The hook plugins could be created in the following Ant command line at $PLUGINS_SDK_HOME/hooks/:

create.sh: ant -Dhook.name=$1 -Dhook.display.name=\"$2\" create
create.bat: call ant -Dhook.name=%1 -Dhook.display...

Fast development


What is fast development of plugins? Fast development allows developers to work with exploded plugin WARs instead of having to package them for deployment. For example, if you change JSP files in a plugin, these JSP files will be modified when you refresh the page in your browser. Furthermore, if you update other files (for example, JSF pages, Java beans, servlets, and so on) besides JSP files, these files will automatically be reloaded by the class loader of Tomcat. Obviously, this will save a lot of development time.

How do we make it happen? Firstly, you need to add a new Ant target deploy-exploded inside the file $PLUGINS_SDK_HOME/build-common-plugin.xml as follows:

// after <target name="deploy" depends="war">
// <copy file="${plugin.file}" todir="${auto.deploy.dir}" />
// </target>, add following lines:
<antelope:stringutil string="${basedir}/${plugin.name}.xml"
property="plugin.context.file">
<antelope:replace regex="\\" replacement="/" ...

Summary


This chapter discussed how to set up, build, and deploy the portal core and plugins in the Eclipse IDE. Then it discussed how to use Service-Builder to generate services and models, and how to add new features to the Service-Builder. It also addressed how to populate the default data, how to use the default project creation and templates, and how to set up fast development of plugins with Tomcat.

In the next chapter, we are going to use Plugins SDK for building generic MVC portlets.

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Key benefits

  • Use Liferay tools (CMS, WCM, collaborative API and social API) to create your own Web sites and WAP sites with hands-on examples
  • Customize Liferay portal using JSR-286 portlets, hooks, themes, layout templates, webs plugins, and diverse portlet bridges
  • Build your own websites with kernel features such as indexing, workflow, staging, scheduling, messaging, polling, tracking, auditing, reporting and more

Description

Liferay portal is one of the most mature portal frameworks in the market, offering many key business benefits that involve personalization, customization, content management systems, web content management, collaboration, social networking and workflow. If you are a Java developer who wants to build custom web sites and WAP sites using Liferay portal, this book is all you need. Liferay Portal Systems Development shows Java developers how to use Liferay kernel 6.1 and above as a framework to develop custom web and WAP systems which will help you to maximize your productivity gains. Get ready for a rich, friendly, intuitive, and collaborative end-user experience! The clear, practical examples in the sample application that runs throughout this book will enable professional Java developers to build custom web sites, portals, and mobile applications using Liferay portal as a framework. You will learn how to make all of your organization's data and web content easily accessible by customizing Liferay into a single point of access. The book will also show you how to improve your inter-company communication by enhancing your web and WAP sites to easily share content with colleagues.

Who is this book for?

This book is for Java developers who don't need any prior experience with Liferay portal. Although Liferay portal makes heavy use of open source frameworks, no prior experience of using these is assumed.

What you will learn

  • Provide complete coverage of both the commercial and open source versions of Liferay Portal 6.1 within the real-world example Knowledge Base portlet
  • Build basic and advanced MVC portlets with the Service-Builder and RBAC permissions, helping you to build enterprise-ready Java web sites
  • Use Ext plugins and Hooks, allowing you to perform custom actions on your portal
  • Manage images, documents, videos, audio, and records using the Document and Media Library and record management
  • Build web content and web forms using the WYSIWYG editors, Custom Attributes, assets tagging and classification, and Dynamic Data List
  • Create a collaborative and social API complete with Ratings, Comments, Subscriptions, Collaboration, Social Equity, and Asset Links
  • Improve your portal with staging, scheduling, remote publishing, caching, clustering, indexing, search, and workflow.
  • Build WAP mobile-based applications and leverage diverse portlet bridges like JSF, Struts, and Spring MVC
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Publication date : Jan 26, 2012
Length: 546 pages
Edition : 1st
Language : English
ISBN-13 : 9781849515986
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ISBN-13 : 9781849515986
Vendor :
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Languages :

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Table of Contents

10 Chapters
Liferay Enterprise Portal Chevron down icon Chevron up icon
Service-Builder and Development Environment Chevron down icon Chevron up icon
Generic MVC Portlets Chevron down icon Chevron up icon
Ext Plugin and Hooks Chevron down icon Chevron up icon
Enterprise Content Management Chevron down icon Chevron up icon
DDL and WCM Chevron down icon Chevron up icon
Collaborative and Social API Chevron down icon Chevron up icon
Staging, Scheduling, Publishing, and Cache Clustering Chevron down icon Chevron up icon
Indexing, Search, and Workflow Chevron down icon Chevron up icon
Mobile Devices and Portlet Bridges Chevron down icon Chevron up icon

Customer reviews

Rating distribution
Full star icon Full star icon Half star icon Empty star icon Empty star icon 2.6
(5 Ratings)
5 star 0%
4 star 40%
3 star 20%
2 star 0%
1 star 40%
T. Vilariño Fidalgo Jan 21, 2013
Full star icon Full star icon Full star icon Full star icon Empty star icon 4
Es una referencia para entender el funcionamiento de Liferay desde la perspectiva del desarrollador. Se echa en falta algún pantallazo de la aplicación funcionando.
Amazon Verified review Amazon
dblessing Feb 29, 2012
Full star icon Full star icon Full star icon Full star icon Empty star icon 4
Liferay Portal Systems Development by Dr. Jonas X. Yuan is a development "cookbook" covering many aspects of Liferay plugin development. First, it describes Liferay tools such as Web Content Management (WCM), Content Management System (CMS), and collaboration and social APIs. In addition, it also covers customization using JSR-286 compliant portlets, hooks, themes, and all other types of Liferay plugins. Finally, the book introduces development using kernel features such as workflow, indexing, staging, scheduling and more. The book is written for Java developers and does not assume any prior experience with Liferay Portal. There is more information on the Packt Publishing webpage for this book at [...]The author, Dr. Jonas X. Yuan, published four Liferay books between 2008 and 2010. He is an expert on Liferay Portal, is an active part of the community and has numerous qualifications. His other recent books include Liferay Portal 6 Enterprise Intranets, 2010, and Liferay Portal User Interface Development, 2010.One of the first things I noticed about the book was the differing levels of explanation. There are high-level overviews, conceptual explanations, code samples and example walkthroughs. In addition, there are very deep inspections of the portal core code to see "What is happening?" at every step. This section may not be of interest to every developer, but the inquisitive person will receive the satisfaction of seeing what happens "under the hood of Liferay", so to speak.Throughout the book Dr. Yuan uses the Knowledge Base portlet as an example. As the reader progresses through the book they can follow the sample code and will have a working plugin at the end. It is helpful to have a purposeful example and it encourages readers to engage what they are learning right away.Liferay Portal Systems Development has a wide variety of topics. More than once I found myself gaining new ideas for my own use. I am willing to bet that even a person who has been around Liferay for some time will find something new. However, there were a few times that I was left wanting more information about a topic. For example, I really felt that structures, templates and service builder could have been examined further. The book had a great overview of each of these topics but many of the questions I have had for some time were not answered.Overall, Liferay Portal Systems Development is a great read for all Liferay developers. There is something in the book for everyone and I'm certain it will prove to be a valuable reference in the future. I definitely recommend picking up this book if you are new to Liferay development and even a seasoned developer is sure to find something new here. For more information or to purchase the book visit the Packt Publishing book site at [...] Additionally, you may download a preview chapter (Chapter 3 - Generic MVC Portlets) from [...]Follow me on Twitter [...] for more help with Liferay Portal
Amazon Verified review Amazon
SANTHOSH G Aug 12, 2016
Full star icon Full star icon Full star icon Empty star icon Empty star icon 3
Its ok. But not useful in real time projects.
Amazon Verified review Amazon
Mario Apr 15, 2015
Full star icon Empty star icon Empty star icon Empty star icon Empty star icon 1
This book is not work the money at all.It looks like a confused javadoc.Even the source code is useless.
Amazon Verified review Amazon
skykam Jul 25, 2013
Full star icon Empty star icon Empty star icon Empty star icon Empty star icon 1
Like a bad javadoc. A really bad javadoc. Liferay in Action is vastly superior but also imperfect, still a better bet than this one.
Amazon Verified review Amazon
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